Remove Zod from named errors (#26982)

packages/opencode/src/cli/ui.ts

@@ -1,6 +1,6 @@
-import z from "zod"
 import { EOL } from "os"
 import { NamedError } from "@opencode-ai/core/util/error"
+import { Schema } from "effect"
 import { logo as glyphs } from "./logo"
 
 const wordmark = [
@@ -10,7 +10,7 @@ const wordmark = [
   `▀▀▀▀ █▀▀▀ ▀▀▀▀ ▀  ▀ ▀▀▀▀ ▀▀▀▀ ▀▀▀▀ ▀▀▀▀`,
 ]
 
-export const CancelledError = NamedError.create("UICancelledError", z.void())
+export const CancelledError = NamedError.create("UICancelledError", Schema.optional(Schema.Void))
 
 export const Style = {
   TEXT_HIGHLIGHT: "\x1b[96m",